[c-nsp] Why it won't route vlan 1 ?

[jcovini at free.fr]

Selon Gert Doering <gert at greenie.muc.de>:

> Hi,
>
> On Tue, May 15, 2007 at 07:51:29PM +0200, Jerome Covini wrote:
> > Jared Mauch wrote:
> > > 	if you have vlan1 on more than one interface (eg: gig1/1 and gig1/2)
> > > they are actually the same vlan.  This device is a switch, not an
> > > independent router.
> >
> > For info, the platform onto which it was working was a totally different
> > one i.e. Cisco 8540CSR with 2port GE modules.
>
> The 8540 is more a "router" type device (well, routing bolted onto an
> ATM switch or so) - the 6500/7600 is an "ethernet switch" device, with
> some of the good sides of it (cheap & fast & can do nice tricks with
> etherchannels etc.) and some of the drawbacks (global vlan space, not
> per-interface).
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
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> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>



Thanks you all folks for your detailed explanations. Now that Im hitting a wall
with the 6500/sup720 based platform, would you recommend another platform that
would allow to replicate a (bad) C8540 setup ? (i.e., allow vlan-1 tagged L3
subinterfaces, and also, allow to use the same vlan tags over different physical
interfaces) ? I believe I should look within the 7200 series platform.

cheers,
jerome